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Finding the Fourth Proportional to 43,873.82, 65,820.45 and 20,487.50

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Solution

The fourth proportional to 43,873.82, 65,820.45 and 20,487.50 is: 30,735.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,873.82 : 65,820.45 = 20,487.50 : x
  2. Step 2: Convert to fraction form
    43,873.82/65,820.45 = 20,487.50/x
  3. Step 3: Cross multiply
    43,873.82x = 65,820.45 × 20,487.50
  4. Step 4: Simplify right side
    43,873.82x = 1,348,496,469.38
  5. Step 5: Solve for x
    x = 1,348,496,469.38/43,873.82
  6. Step 6: Final answer
    x = 30,735.79

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.